ISO 5518-1978 标准详情
- 标准号:ISO 5518-1978
- 中文标题:水果、蔬菜及其制品.苯甲酸含量的测定.分光光度法
- 英文标题:fruits,vegetables and derived products-determination of benzoic acid content-spectrophotometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1978-05-01
The method consists in homogenizing the product, followed by dilution and acidification of a test portion, extraction of the acid by diethyl ether, then alkaline re-extraction of this acid and purifying by oxidation using acidified potassium dichroma
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